Public water system · WI1250073

Active

Arena Waterworks

At a glance

Arena Waterworks (PWSID WI1250073) is an active community water system in Iowa County, Wisconsin. It reports serving 877 people through 324 service connections. Its primary water source is groundwater, and EPA lists it as owned by a local government. EPA's records list 11 violations for this system; 2 are health-based, and the most recent began in June 2005.

Dataset updated October 2026 . Source: EPA SDWIS/ECHO public records.

Population served

877

Service connections

324

Primary source

Groundwater

System type

CWS

Community water system

System record

PWSIDWI1250073

System typeCommunity water system

Activity statusActive

Population served877

Service connections324

Primary water sourceGroundwater

Owner typeLocal government

Primacy agencyWI state drinking water program

City servedArena

StateWisconsin

ZIP—

CountyIowa County

How does Arena Waterworks compare with other water systems in Iowa County?

By EPA's size categories, Arena Waterworks is a small system (501 to 3,300 people). Iowa County has 78 active public water systems, and Arena Waterworks is the 5th-largest of them by population served. Its population served is about 163% above the county average of 333 people per system, and accounts for 3.4% of the 25,964 people reported by systems filed under the county. Across Wisconsin, the 11,056 active systems average 469 people each. Nationally, the average active community water system reports serving 6,703 people, so Arena Waterworks is well below that figure.

What does “community water system” mean?

A community water system serves at least 15 connections used by year-round residents, or regularly serves at least 25 year-round residents. Homes, apartments and mobile-home parks are served by these. Wisconsin has 1,053 active community water systems, 9.5% of the state's 11,056 active systems. Groundwater means the system draws its water from wells or springs fed by underground aquifers. 10,978 Wisconsin systems (99%) list groundwater as their primary source.

Who owns and regulates Arena Waterworks?

EPA lists Arena Waterworks as owned by a local government. The WI state drinking water program is its primacy agency, the regulator with primary enforcement responsibility for the system under the Safe Drinking Water Act. 19 of the 78 active systems in Iowa County (24%) are also owned by a local government.

Does Arena Waterworks have drinking water violations?

EPA's records list 11 violations for this system; 2 are health-based, and the most recent began in June 2005. The violations listed here began between July 1993 and June 2005. By type: 8 monitoring and reporting, 2 contaminant level above the legal limit and 1 public notice, recordkeeping or other. The contaminant or rule involved most often is Total coliform bacteria (TCR) (4 of them). EPA lists 6 as resolved and 5 as archived. Resolved means at least one resolving action is on record: the system returned to compliance, the rule no longer applies, or no further action was needed. Archived means the violation was not marked resolved but is more than five years past the end of the noncompliance period, so it no longer counts toward current compliance status.

Began	Violation	Contaminant or rule	Health-based	Status
2005-06-01	Contaminant level above the legal limitMaximum Contaminant Level Violation, Acute (TCR) · code 21	Total coliform bacteria (TCR)code 3100	Yes	Resolved
2004-12-01	Monitoring and reportingMonitoring, Routine Minor (TCR) · code 24	Total coliform bacteria (TCR)code 3100	No	Resolved
2003-11-01	Contaminant level above the legal limitMaximum Contaminant Level Violation, Monthly (TCR) · code 22	Total coliform bacteria (TCR)code 3100	Yes	Resolved
2002-07-01	Public notice, recordkeeping or otherConsumer Confidence Report Complete Failure to Report · code 71	Consumer Confidence Rulecode 7000	No	Resolved
2001-01-01	Monitoring and reportingMonitoring, Regular · code 03	Combined Radium (-226 and -228)code 4010	No	Archived
2001-01-01	Monitoring and reportingMonitoring, Regular · code 03	Radium-228code 4030	No	Archived
2001-01-01	Monitoring and reportingMonitoring, Regular · code 03	Gross alpha (excluding radon and uranium)code 4000	No	Archived
2001-01-01	Monitoring and reportingMonitoring, Regular · code 03	Radium-226code 4020	No	Archived
1999-03-01	Monitoring and reportingMonitoring, Routine Major (TCR) · code 23	Total coliform bacteria (TCR)code 3100	No	Resolved
1993-07-01	Monitoring and reportingInitial Tap Sampling for Pb and Cu · code 51	Lead and Copper Rulecode 5000	No	Resolved
1993-07-01	Monitoring and reportingInitial Tap Sampling for Pb and Cu · code 51	Lead and Copper Rulecode 5000	No	Archived

All 11 violations in EPA's records, newest first.Labels and codes come from EPA's SDWIS reference tables. A monitoring or reporting violation means a required test or report was missed or late; it does not by itself mean a contaminant was found. "Health-based" marks violations of a legal limit or required treatment.

Arena Waterworks: frequently asked questions

Who runs Arena Waterworks?

Arena Waterworks (PWSID WI1250073) is a community water system owned by a local government. It is regulated by the WI state drinking water program.

How many people does Arena Waterworks serve?

Arena Waterworks reports serving 877 people through 324 service connections in Iowa County, Wisconsin.

Where does Arena Waterworks get its water?

EPA SDWIS lists this system's primary water source as groundwater. Groundwater means the system draws its water from wells or springs fed by underground aquifers.

Does Arena Waterworks have any drinking water violations?

EPA's records list 11 violations for this system; 2 are health-based, and the most recent began in June 2005. A monitoring or reporting violation means a required test or report was missed or late; it does not by itself mean a contaminant was found.

Is Arena Waterworks' water safe to drink?

AquaCensus shows EPA compliance records, not current water test results, so it cannot say whether the water is safe at a given moment. EPA's records list 11 violations for this system; 2 are health-based, and the most recent began in June 2005. For current results, consult the system's annual water quality report, EPA ECHO, or the WI state drinking water program.

Where can I find Arena Waterworks' water quality report?

As a community water system, Arena Waterworks must deliver an annual water quality report, called a Consumer Confidence Report, to its customers by July 1 each year, covering the previous calendar year. The system can provide a copy on request.

Other water systems in Iowa County

Water system	County	Population served	Type	Source
Dodgeville Waterworks	Iowa	4,583	Community	Groundwater
Mineral Point Waterworks	Iowa	2,487	Community	Groundwater
House on the Rock	Iowa	2,025	Non-transient non-community	Groundwater
Barneveld Waterworks	Iowa	1,258	Community	Groundwater
Highland Waterworks	Iowa	842	Community	Groundwater
American Players Theatre -Gateway	Iowa	821	Transient non-community	Groundwater

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About this data

Source: U.S. EPA Safe Drinking Water Information System (SDWIS) and SDWA violation records, via EPA ECHO, as published October 1, 2026 — AquaCensus refreshes it quarterly. See the methodology for how records are matched, cleaned and scored.

Cite as: AquaCensus, “Arena Waterworks, PWSID WI1250073, Wisconsin”, https://aquacensus.com/water-systems/wisconsin/arena-waterworks-wi1250073 (data as of October 1, 2026).